alt Hacker NewsThe Olympics used to do this. From as early as the 1960's they were doing genetic testing on female athletes. They stripped Polish sprinter Ewa Kłobukowska of all her medals and records in 1967, in spite of the fact that she gave birth to a child a year later, which would seem to indicate that she was a woman. The Olympics only abandoned this testing regime after the 1996 Olympic Games when 8 women who were cis and assigned female from birth to that moment were wrongly tested as male (7 AIS cases, 1 5-alpha-steroid reductase deficiency ). The uproar from that caused the Olympics to realize that this was a lot more complicated then they thought and abandon the idea of a strict genetic test.
Because those 8 women at that one Games were a lot more than all transfem Olympic athletes in history combined, the danger of ruling people out is much greater than the danger of allowing someone in who doesn't deserve it.
Fascinating that this is being downvoted.
Anyway, some more links to spread the getting-downvoted love:
"Gender verification of female Olympic athletes" (Medicine & Science in Sports & Exercise, 2002): https://journals.lww.com/acsm-msse/fulltext/2002/10000/gende...
> The shift to PCR-based techniques replaced one diagnostic genetic test with another but did not alleviate the problems. Positive results still stigmatized women with such conditions as androgen insensitivity, XY mosaicism, and 5-α-reductase deficiency. Both sex chromatin and SRY tests identify individuals with genetic anomalies that yield no competitive advantage. Therefore, finally in 1999, the IOC conditionally rescinded its 30-yr requirement for on-site gender screening of all women entered in female-only events at the Olympic Games, starting with Sydney in 2000. Rather, intervention and evaluation of individual athletes by appropriate medical personnel could be employed if there was any question about gender identity. This change has not been made permanent.
"World Athletics' mandatory genetic test for women athletes is misguided. I should know – I discovered the relevant gene in 1990" (Andrew Sinclair, 2025): https://www.mcri.edu.au/news/insights-and-opinions/world-ath...
> It is worth noting these tests are sensitive. If a male lab technician conducts the test he can inadvertently contaminate it with a single skin cell and produce a false positive SRY result.
> No guidance is given on how to conduct the test to reduce the risk of false results.
> Nor does World Athletics recognise the impacts a positive test result would have on a person, which can be more profound than exclusion from sport alone.
> There was no mention from World Athletics that appropriate genetic counselling should be provided, which is considered necessary prior to genetic testing and challenging to access in many lower- and middle-income countries.
> I, along with many other experts, persuaded the International Olympic Committee to drop the use of SRY for sex testing for the 2000 Sydney Olympics.
> It is therefore very surprising that, 25 years later, there is a misguided effort to bring this test back.
"Medical Examination for Health of All Athletes Replacing the Need for Gender Verification in International Sports" (JAMA, 1992): https://jamanetwork.com/journals/jama/article-abstract/39507...
> Even if a molecular method could be devised that had a very small error rate, it would still just constitute a test for a nucleic acid sequence, not for sex or gender. Although one can test for the main candidate gene for male sex determination, SRY, it still holds that most XY women test positive and some XX males test negative for SRY. It is possible that there will never be a laboratory test that will adequately assess the sex of all individuals.
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> (IAAF proposals held) that the purpose of gender verification is to prevent normal men from masquerading as women in women's comopetition was reinforced. Perhaps a genuine concern decades ago, this fear now seems to be a less pressing concern. One reason may be that routine drug testing now requires the voiding of urine be carefully watched by an official to make certain that urine from a given athlete actually comes from his or her urethra. Thus, athletes are already carefully watched in "doping stations". The likelihood of a male successfully masquerading as a female under such circumstances seems remote in current comparison.